The ones in this photo are all one wire cleats. Brunt, E, M (Macomb), Triangle M and PP INc. The last piece I bought from a friend at a show the other year who had passed away. The bottom is white glazed and the top is a blue gray glaze. Was glad I could purchase this from him but sorrowed that he passed. At least when I look at this insulator it will remind me of him at the show and that this was the last piece I bought from him. R.I.P Tony Monza. Forgive me if I spelled it wrong.